public async Task <bool> Handle(CreateStudentRecordCommand command, CancellationToken cancellationToken)
{
Email email = Email.Create(command.Email);
Name name = Name.Create(command.FirstName, command.LastName);
var student = new Student(name, email);
if (command.CoursesTaken != null)
{
foreach (var courseId in command.CoursesTaken)
{
Course course = _certificationRepository.GetCourseById(courseId);
if (course == null)
{
throw new CourseException("Course not found");
}
string result = student.TakeCourse(course);
if (result != "OK")
{
throw new CourseException(result);
}
}
}
if (command.ExamsPassed != null)
{
foreach (var examId in command.ExamsPassed)
{
Exam exam = _certificationRepository.GetExamById(examId);
if (exam == null)
{
throw new ExamException("Exam not found");
}
string result = student.PassExam(exam);
if (result != "OK")
{
throw new ExamException(result);
}
}
}
List <CertificationRequirement> certificationRequirements = _certificationRepository.GetCertificationRequirementsAll();
if (certificationRequirements == null)
{
throw new CertificationException("Certification requirements not found");
}
List <int> qualifyCertifications = student.GetStudentCertificationIds(certificationRequirements);
if (qualifyCertifications != null)
{
foreach (var certificationId in qualifyCertifications)
{
Certification certification = _certificationRepository.GetCertificationById(certificationId);
if (certification == null)
{
throw new CertificationException("Certification not found");
}
string result = student.ObtainCertification(certification);
if (result != "OK")
{
throw new CertificationException(result);
}
}
}
_studentRepository.Save(student);
return(await _studentRepository.SaveEntitiesAsync());
}